Answered

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If a weightlifter lifts 2000 newtons to a height of 2 metres in 4 seconds, how powerful is he?.

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The weightlifter can exert a power of 1000 watts, for the given work done and time.

What is Power?

The quantity of energy moved or converted per unit of time is known as power. The watt, or one joule per second, is the unit of power in the International System of Units.  Power is a scalar quantity.

What is Work done?

Only when a particular distance is traversed or when force is applied is work performed. No work is done if the force given to the object does not cause it to move.

Calculations:

Power (P) = work done/time taken

Work done = 2000N * 2m = 4000Nm

Time taken = 4 seconds

P= 4000Nm/4sec = 1000watts

So, the person can exert a power of 1000 watts.

Hence, the weightlifter can exert a power of 1000 watts, for the given work done and time.

To know more about Power, check out:

https://brainly.com/question/1634438

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